of Lucanoid Coleoptera. 61 
dine duplo breviori, lateribus fortiter marginatis, valde rotun- 
datis, angulis posticis rectis, prominulis; elytris obsolete 
striatis, striis punctatis, interstitiis rugosis, confuse punctatis ; 
tibiis posticis denticulo externo ad medium armatis. 
Long. unc. *38. 
Hab. California. Dom. Agassiz. 
In the publication above alluded to the author states this species 
to be closely related to Platycerus depressus, Leconte, with which 
species P. Oregonensis, Westwood, is perhaps identical. 
Scierostomus Farrmairit 6, 2, Parry. 
S. depressus, supra atro-czeruleus, parum nitidus ; prothorace 
elytrisque vitta lutescente marginatis, parce grosseque punc- 
tatis; mandibulis nigris, capitis fere longitudine, ad basin pro- 
cessu quadrinodoso productis; capite pone oculos minute 
tuberculato ; prothorace disco in medio impressione magna 
ovali, lateribus depressis ; elytris apice acutis, sparse grosse- 
que punctatis, humeris productis ; pedibus nigris;_ tibiis 
anticis irregulariter denticulatis, 4 posticis in medio uni- 
spinosis ; tarsis subtus setosis; corpore infra nigro, crebre 
punctato. 
Long. corp. (mandib. incl.) lin. 9. 
Hab. Chili. 
I am indebted to M. Fairmaire for the addition of this new 
species (of which I have also seen a specimen in the collection of 
Alexander Fry, Esq.) to my cabinet ; it is allied to S. femoralis, 
Guérin, but at once distinguished from it by its more depressed 
and less punctate elytra and less rounded apex of those organs, 
the more clearly defined and narrower longitudinal pale yellow 
lateral vitta above mentioned, and, finally, by the legs being black 
instead of rufous. The female, as is usual in this genus, differs 
in having short, coarsely punctate mandibles (which, in the pre- 
sent instance, appear to be totally unarmed), and in the minute 
size and strong punctuation of the head, 
[Screrostomus Puriierr 3, ¢ (Parry, MS.) Westw.* (PI. XI. fig. 5.) 
S. niger; pronoto et elytris subnitidis fasciaque pallide flavo- 
squamosa marginatis; capite antice concavo, utrinque inter 
et ante oculos carina modice elevata obliqua instructo; man- 
dibulis ( # ) capitis longitudine, lunatis, apice ovato-dilatatis, 
denteque magno plano trifido intus versus basin armatis ; 
* See note *, ante, p. 17, 
