cragin.] DESCRIPTIONS OF SPECIES. 53 
As it has not been practicable to restudy the type, the original 
account of the species is here reproduced, which is as follows : 
Shell large and thick, ventricose (subrhomboidal?) ; beaks large, remote from 
the anterior extremity, their summits very obtuse as viewed from the side or 
from above, their apices less compressed and less free than in G. terminal is or 
C. gratioti;a anterior dorsal border prominent and compressed, subaliform, the 
surface included between it and the [anterior &] line of the beaks being orna- 
mented with raised radial lines, posterior dorsal angle (apparently) shorter and 
lower than the anterior, posterior umbonal slope prominently angulated, the 
angulation succeeded on the inner side by a pronounced sulcus, which is in turn 
limited on its inner side by another angulation less prominent than the first: 
hinge-area broad, divaricate-grooved; anterior lateral denticles four (and one 
•udimentary), long, strong, and horizontal, their abruptly deflected inner termi- 
nation being relatively very short. Mesial and posterior denticles unknown. 
Occurrence. — Collected by Mr. von Streeruwitz about 1 mile northeast c of 
Malone, El Paso County, with Venus malonensis^ and other forms, as mentioned 
under that species. Comanche series. 6 
In size this shell apparently exceeds the other known species of Cucullaea from 
the Comanche series of Texas. 
Cucullaea catorcensis C. and A. 
Gucullwa (Trigonarca) catorcensis Castillo and Aguilera, 1895, Bob Com. 
Geol. Mex., No. 1, p. 5, PI. IV, tigs. 1, -i. and 5. 
Two small Cucullaea casts, of medium ventricosity, obtained below 
he Iota conglomerates, If miles east of Malone station, and two from 
above similar conglomerates in the eastern base of Malone Mountain, 
n the anticline about 1 mile north of its southern end, are referred to 
:he young of this species. 
The following is a translation of Castillo and Aguilera \s descrip- 
ion of Cucullcea catorcensh, as given (loc. cit.) in their " Fauna Fosil 
le la Sierra de Catorce : " 
Shell bulky, very convex, of quite variable contour, oval in the young exam- 
)les, subquadrangular in those which are more developed, and subtrapezoidal 
n the adults. Beaks broad, very prominent and little removed from one another, 
situated in the anterior third and nearly terminal in the adult examples, pro- 
ided with a carina on the anal side. Buccal region very much more short than 
be anal, rounded on the extremity, a little excavated near the cardinal border 
a C. terminalis Con. and C. graiioti Hill, of the Comanche Cretaceous. 
6 Reads "posterior," by error, in the original. 
r The same locality is herein generally called " 1J miles east of Malone station," and ia 
>erhaps a little short of the latter distance, so far as occurrence of the larger number of 
he fossils is concerned. I have understood that all of the fossils obtained from this 
ipot in 1890 were actually collected by Mr. Wysehetzki ; and if so, the name of Mr. von 
Streeruwitz was probably put ou the label in view of his having been in charge of the 
rans-Pecos division of the Texas survey. 
Astarte malonensis of the present writing. 
For explanation of the manner in which the few fossils known from this locality in 
.893 were at that time placed in the Comanche series, see Introduction. Instead of 
Comanche series," read Malone formation. 
