¢ 
314 Miscellaneous. 
stinctly says, the skulls contained fragments of the latter and none of 
the former; upon this point the Archdeacon also expressly states, 
“they were both found lying close together.” If therefore the 
above skull eventually proves to be that of a bear, the period of its 
existence is decided to have been cozeval with that of the Megaceros ! 
Believe me, my dear Sir, yours very truly, 
Henry Denny, A.L.S, 
On some new genera and species of Entozoa. By Dr. Lrrpy. 
1. Ascaris cylindrica. Body nearly cylindrical throughout, an- 
teriorly moderately attenuated; tail curved, 1-214th of an inch in 
length from the anus; cesophagus elongated, gibbous in the middie, 
with the cesophageal bulb and pharynx 1-100th of an inch in length ; 
cesophageal bulb pyriform, 1-75th of an inch in diameter ; ventricle 
or intestine somewhat tortuous, cylindrical, dilated at both extremi- 
ties ; rectum pyriform; female generative aperture about half-way 
between the mouth and tail. Whole length 4-5th of a line, breadth 
1-12th of a line. 
Hab. Small intestine of Helix alternata. 
Remarks.—I\ found the female only of this species in fifteen out of 
forty specimens of [Helix alternata, in numbers of from one to three. 
The ovaries in all were distended with ova, the latter measuring 1-430th 
of an inch in length by 1-576th in breadth. 
2. Ascaris infecta. Female.—Subcylindrical, gradually diminishing 
towards the extremities, white, with a brown streak down the lower 
two-thirds of the middle line; anteriorly obtusely rounded ; tail 
slightly curved, 1-80th of an inch long from the anus. The three 
papillee of the mouth projecting ; cesophagus strongly muscular, thick, 
oblong, pyriform, 1-80th of an inch long, greatest breadth 1-175th 
of an inch; cesophageal bulb cordiform, 1-166th of an inch long by 
1-166th of an inch broad ; ventricle slightly dilated at commencement, 
contracted posteriorly ; generative orifice projecting, just below the 
middle of the body; vagina furnished with a large ovate seminal 
receptacle. 
Male.—Dilated at both extremities ; tail thick, 1-174th of an inch 
long, furnished upon its inner aspect with two minute tubercles. 
Above the anus are two rows, each of four tubercles, connected by 
delicate folds of integument. Qisophagus 1-111th of an inch long 
by 1-260th of an inch broad ; cesophageal bulb depressed cordiform, 
1-214th of an inch long by 1-250th of an inch broad. Penis formed 
of two curved spiculze, measuring in length, in a straight line, 1-78th 
of an inch. 
Length of adult female 3 to 44 lines; breadth at origin of ventri- 
culus 1-123rd of an inch; middle of body 1-83rd to 1-60th of an 
inch ; just above anus 1-144th of an inch. Ova 1-319th of an inch 
long by 1-428th inch broad. 
Length of male 2 lines ; breadth at origin of ventriculus 1-176th of 
an inch ; middle of body 1-21 1th of an inch ; just above anus 1-202nd 
of an inch. Spermatophori oval, 1-1391 mch long by 1-1666th 
inch broad, with spermatozoa 1-3750th inch long by 1-10,000th 
inch broad. 
