186 PROCEEDINGS OF THE ACADEMY OF [1876. 
in dentition with his Laminella, Amastra, Leptachatina, but differs 
in having a costate jaw. Carelia, therefore, must stand distinct 
from any of the other groups of Achatinella. 3 
My description and figures should be studied in connection with 
my former papers on Achatinella in Annals of Lyceum of Natural 
History of New York, Vol. X., p. 331, pl. xv., and Vol. XI., p. 190, 
pl. xiv., in the preparation of which I was assisted by Mr. Bland. 
The animal is obtuse before, pointed behind. The mantle 
appears subcentral in the single individual examined, which is 
preserved in alcohol. The orifice of respiration and anal orifice 
are as usual in the heliciform genera. The genital orifice as far 
as I can judge is somewhat removed from behind the right eye 
peduncle, rather under the mantle edge, but it is difficult to say 
what is its position in the living animal. There is no sign of a 
distinct locomotive disk or of a caudal mucus pore. 
The jaw (pl. VI., fig. a) is low, slightly arcuate, with but little 
attenuated, blunt ends: anterior surface with ten stout ribs, den- 
ticulating either margin. 
Lingual membrane (pl. VI., fig. cc) long and narrow. Teeth 
37—1—37 of same type as I have formerly described (1. c.) for 
species of Laminella, Amastra, and Leptachatina, the marginals 
being irregularly and obliquely pectinate as in Achlla. obesa (1. ¢.). — 
The digestive system, as would be anticipated from the shape 
of the shell, is characterized by the extreme length of the ceso- 
phagus. The salivary ducts are comparatively short. The sali- 
vary glands are small and in a globular mass around the cesophagus. ~ 
The buccal mass with its pouch of the lingual membrane is as 
usual: its retractor muscle is attached to the retractor of the head. 
The genitalia are here figured (pl. VI., fig. 0). It will be seen 
that there is in the specimen examined a decided external swelling 
of both male and female (the former, female (7. 0.), large and horn- 
shaped, the latter, male (m..o.), small and globular) organs; owing, 
perhaps, to the sudden immersion of the individuals in alcohol. 
The gravid state of the uterus precludes the possibility of these 
swellings being preparatory to accouplement ‘This condition of 
the external orifices accounts for the wide separation of the genital _ 
bladder from the vagina, and of the accessory organ (pr.) from 
the penissac. The figure is of life size, all the organs having been 
accurately measured. The testicle (¢.) is composed of short covca 
grouped in a globular mass. The epididymis (ep.) is short and 
