CHLORITIS. 123 



Section Trichochloritis Pilsbry. 



Trichochloritis PILS., Manual of Conch., vi, p. 267. 



Shell depressed, rather thin, the spire low-convex or flat, the base 

 generally obtusely angled around the umbilicus. Epidermis not 

 deciduous; apex and the whole shell hirsute or marked by hair- 

 scars arranged in regular lines ; lip thin, expanded or narrowly 

 reflexed. Type C. breviseta Pfr. 



Anatomy unknown. Distribution, Southern China to Borneo. 



As I have written in this work (vi, p. 242) and von Mollendorff 

 has emphasized (Nachr., 1892, p. 94), the sections of Chloritis stand 

 " auf etwas schwachen Fiisseu." In other words, the series seems 

 to intergrade by rather easy stages throughout, not even excepting 

 Sulcobasis. Disclaiming any desire to supply crutches to a section 

 which cannot stand upon its own merits, I still retain the name 

 Trichochloritis for the group of small, thin species having the same 

 distribution as Camcena, believing it a convenient division. When 

 enough species are known anatomically to show the true classifica- 

 tion of Chloritis and the .line dividing that genus from Trachia and 

 Eulotella, I shall be among the first to discard the present arbitrary 

 system. 



The genital system of C. crassula has been figured by Wiegmann 

 (Zool. Ergebnisse einer Reise in Niederliindisch Ost-Indien. iii, pi. 

 13, f. 10). It resembles that of C. portei except that the enlarge- 

 ment at the apex of the penis is long and curved so long that 

 Wiegmanu calls it a penis gland, although in my opinion, it is not 

 glandular, but simply a pouch-like enlargement of the penis for the 

 accomodation of a large imperforate papilla. 



The epiphallus bears the retractor, and is continued beyond the 

 insertion of the vas deferens in a short flagellum. The duct of the 

 spermatheca is much and abruptly swollen at the base and this 

 swelling is doubtfully interpreted as a dart-sack and mucus gland 

 by Wiegmann, who did not open it, however. If his view is correct,, 

 the species must be an Eulotella; but I prefer to consider the 

 structure as a mere muscular enlargement of the spermatheca duct, 

 probably with plicate internal walls, such as is often found in the 

 Helices. The union of dart-sack with spermatheca duct would be 

 an extremely unusual character, if confirmed. 



