In other Gregarines, however, those, namely, which pass inwards, ultimately becoming "coelomic," as well as those which become entirely intracellular, no epimerite is ever developed, and, further, the body remains single or unseptate. These forms, which include, for instance, _Monocystis_ (fig. 4), _Lankesteria_, _Diplocystis_, are distinguished, as _Acephalina_ or _Aseptata_ (_Haplocyta_, _Monocystida_), according to which character is referred to, from the others, termed _Cephalina_ or _Septata_ (_Polycystida_). The two sets of terms are not, however, completely identical or interchangeable, for there are a few forms which possess an epimerite, but which lack the division into protomerite and deutomerite, and are hence known as _Pseudomonocystida_; this condition may be primitive (_Doliocystis_) or (possibly) secondary, the partition having in course of time disappeared. Again, _Stenophora_ is a septate form which has become, secondarily, completely intracellular during the young stages, and, doubtless correlated with this, shows no sign of an epimerite. [Illustration: From Wasielewski, after Leger. FIG. 7.--Forms of Epimerites. 1, _Gregarina longa_. 2, _Sycia inopinata_. 3, _Pileocephalus heerii_. 4, _Stylorhynchus longicollis_. 5, _Beloides firmus_. 6, _Cometoides crinitus_. 7, _Geneiorhynchus monnieri_. 8, _Echinomera hispida_. 9, _Pterocephalus nobilis_.] With regard to the epimerites themselves, they are of all variety of form and shape and need not be described in detail (fig. 7). In one or two cases, however, another variety of attaching organella is met with. Thus in _Pterocephalus_, only the rostrum of the sporozoite penetrates into the host-cell, and no epimerite is formed. Instead, a number of fine root-like processes are developed from near the anterior end, which pass in between the host-cells (fig. 5) and thus anchor the parasite firmly. Similarly, in the curious _Schizogregarinae_, the anterior end of the (unseptate) body forms a number of stiff, irregular processes, which perform the same function (fig. 8). It is to be noted that these processes are non-motile, and not in any way comparable to pseudopodia, to which they were formerly likened.